Coalescence is the joining of separate things until they become one. Two groups, two plans, two drops of oil, even two sounds in a word — if they grow together so fully that you no longer see them as separate, that joining is coalescence.

Coalescence指 is the joining of separate things原本分開的東西合在一起，until they become one直到變成一個。Two groups兩個團體、two plans兩個計畫、two drops of oil兩滴油，even two sounds in a word甚至一個字裡的兩個音——if they grow together so fully如果它們完全融合在一起 that you no longer see them as separate到你再也分不出原本是分開的，that joining is coalescence那個融合過程就叫coalescence。

It is a careful, rather formal word: you meet it in science, news, and school writing more than in chat. Everyday English usually just says they came together or they merged.

It is a careful, rather formal word這是個講究、相當正式的字：you meet it你會 in science, news, and school writing在科學、新聞，和學校寫作裡遇到它 more than in chat比在聊天裡更常見。Everyday English日常英語 usually just says they came together通常只會說they came together（它們合在一起了）or they merged或they merged（合併了）。

Scientists like it for the slow joining of drops or particles into one bigger mass. Though actually, this is a noun — the name of the process, and sometimes of the result.

Scientists科學家 like it for喜歡用它來講 the slow joining of drops or particles into one bigger mass一滴滴、一顆顆慢慢合成一大團的過程。Though actually不過事實上，this is a noun這是個名詞——the name of the process指這個過程的名稱，and sometimes of the result有時候也指結果本身。

The verb is coalesce. It does not mean a loose crowd standing near each other; the pieces have to become one.

The verb動詞形式 is coalesce是coalesce。It does not mean a loose crowd standing near each other它指的不是一群人鬆散地站在一起；the pieces那些部分 have to become one必須真正合而為一。